diff --git a/platforms/posix/src/lockstep_scheduler/CMakeLists.txt b/platforms/posix/src/lockstep_scheduler/CMakeLists.txt
index a51e57cb1cec37d057bb14c5fd83bef67252046a..47cc06962ea9461425c34f4c90f337e85d25a764 100644
--- a/platforms/posix/src/lockstep_scheduler/CMakeLists.txt
+++ b/platforms/posix/src/lockstep_scheduler/CMakeLists.txt
@@ -2,39 +2,39 @@ cmake_minimum_required(VERSION 2.8.12)
 
 if(NOT PROJECT_NAME STREQUAL "px4")
 
-    project(lockstep_scheduler)
+	project(lockstep_scheduler)
 
-    set (CMAKE_CXX_STANDARD 11)
+	set (CMAKE_CXX_STANDARD 11)
 
 	add_definitions(-DUNIT_TESTS)
 
-    add_library(lockstep_scheduler
-        src/lockstep_scheduler.cpp
-    )
+	add_library(lockstep_scheduler
+		src/lockstep_scheduler.cpp
+	)
 
-    target_include_directories(lockstep_scheduler
-        PUBLIC
-            $<INSTALL_INTERFACE:include>
-            $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
-        PRIVATE
-            ${CMAKE_CURRENT_SOURCE_DIR}/src
-    )
+	target_include_directories(lockstep_scheduler
+		PUBLIC
+			$<INSTALL_INTERFACE:include>
+			$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+		PRIVATE
+			${CMAKE_CURRENT_SOURCE_DIR}/src
+	)
 
-    target_link_libraries(lockstep_scheduler
-        pthread
-    )
+	target_link_libraries(lockstep_scheduler
+		pthread
+	)
 
-    target_compile_options(lockstep_scheduler PRIVATE -Wall -Wextra -Werror -O2)
+	target_compile_options(lockstep_scheduler PRIVATE -Wall -Wextra -Werror -O2)
 
-    add_subdirectory(test)
+	add_subdirectory(test)
 
 else()
 
-    add_library(lockstep_scheduler
-        src/lockstep_scheduler.cpp
-    )
-    include_directories(
-        include
-    )
+	add_library(lockstep_scheduler
+		src/lockstep_scheduler.cpp
+	)
+	include_directories(
+		include
+	)
 
 endif()